Subwoofer



FIG. 1 is a top perspective view of a subwoofer showing our new design;

FIG. 2 is front view thereof, the rear view being identical;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a side view thereof, the opposite side being identical; and,

FIG. 6 is a bottom perspective view thereof. 

The ornamental design for a subwoofer, as shown and described. 